Number of nX7 0..1 arrays with no element equal to more than two of its horizontal, diagonal or antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

A281399

Number of nX7 0..1 arrays with no element equal to more than two of its horizontal, diagonal or antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

Terms

    a(0) =0a(1) =1296a(2) =2364a(3) =6276a(4) =16241a(5) =37462a(6) =84474a(7) =185834a(8) =400854a(9) =871302a(10) =1899789a(11) =4111556a(12) =8868230a(13) =19130914a(14) =41172419a(15) =88375862a(16) =189462087a(17) =405538634a(18) =866448924a(19) =1848700340a(20) =3939571575a(21) =8383924848a(22) =17820831178a(23) =37839585622a(24) =80261619670

External references